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atux at null.net
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 Posted: Sat Oct 15, 2016 1:22 pm Post subject: [asterisk-users] Feature access codes |
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Hi. Kinda new to the area and I would like some help please. I have asterisk 11 in my system and I have 10 users and 12 DIDs. One did routed to each user and 2 DIDs for faxing. Everything works fine but I do not have call transfer between extensions and feature access codes. I have read somewhere that enabling call transfer can be a security hole for sip attackers.
I would appreciate any help available, please. |
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asterisk.org at sedwar...
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| Posted: Sat Oct 15, 2016 1:42 pm Post subject: [asterisk-users] Feature access codes |
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On Sat, 15 Oct 2016, tux john wrote:
| Quote: | Hi. Kinda new to the area and I would like some help please. I have
asterisk 11 in my system and I have 10 users and 12 DIDs. One did routed
to each user and 2 DIDs for faxing. Everything works fine but I do not
have call transfer between extensions and feature access codes. I have
read somewhere that enabling call transfer can be a security hole for
sip attackers.
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Are these incoming calls copper or VOIP?
If you only accept copper calls, make sure Asterisk is only listening to
127.0.0.1 and enforce this policy with another layer dropping any incoming
SIP packets at the firewall.
If you only intend to accept calls from your ISP, configure Asterisk to
only accept calls from your ISP, and enforce this policy at the firewall.
If you accept calls from everyone, re-think your definition of 'everyone.'
It probably does not include Iraq, North Korea, China, Russia, etc.
Configure Asterisk and your firewall accordingly.
Beyond this, follow 'best practices' (google for sip best practices --
John Todd did a list years back, Nerdvittles probably will also be a good
resource) like long, random user names and passwords, only allow needed
features to each class of users, etc.
--
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards sedwards@sedwards.com Voice: +1-760-468-3867 PST
https://www.linkedin.com/in/steve-edwards-4244281
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
Join the Asterisk Community at the 13th AstriCon, September 27-29, 2016
http://www.asterisk.org/community/astricon-user-conference
New to Asterisk? Start here:
https://wiki.asterisk.org/wiki/display/AST/Getting+Started
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
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atux at null.net
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| Posted: Sun Oct 16, 2016 1:33 am Post subject: [asterisk-users] Feature access codes |
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Thanks for the reply. I do know the security practices and I am using VoIP. The problem is that I do not know how to configure the feature access codes including transfer.
On 15/10/2016, 21:42 Steve Edwards <asterisk.org@sedwards.com> wrote: | Quote: | | On Sat, 15 Oct 2016, tux john wrote: > Hi. Kinda new to the area and I would like some help please. I have > asterisk 11 in my system and I have 10 users and 12 DIDs. One did routed > to each user and 2 DIDs for faxing. Everything works fine but I do not > have call transfer between extensions and feature access codes. I have > read somewhere that enabling call transfer can be a security hole for > sip attackers. Are these incoming calls copper or VOIP? If you only accept copper calls, make sure Asterisk is only listening to 127.0.0.1 and enforce this policy with another layer dropping any incoming SIP packets at the firewall. If you only intend to accept calls from your ISP, configure Asterisk to only accept calls from your ISP, and enforce this policy at the firewall. If you accept calls from everyone, re-think your definition of 'everyone.' It probably does not include Iraq, North Korea, China, Russia, etc. Configure Asterisk and your firewall accordingly. Beyond this, follow 'best practices' (google for sip best practices -- John Todd did a list years back, Nerdvittles probably will also be a good resource) like long, random user names and passwords, only allow needed features to each class of users, etc. -- Thanks in advance, ------------------------------------------------------------------------- Steve Edwards sedwards@sedwards.com Voice: +1-760-468-3867 PST https://www.linkedin.com/in/steve-edwards-4244281 -- _____________________________________________________________________ -- Bandwidth and Colocation Provided byhttp://www.api-digital.com -- Join the Asterisk Community at the 13th AstriCon, September 27-29, 2016 http://www.asterisk.org/community/astricon-user-conference New to Asterisk? Start here: https://wiki.asterisk.org/wiki/display/AST/Getting+Started asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users |
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support at drdos.info
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| Posted: Sun Oct 16, 2016 6:46 am Post subject: [asterisk-users] Feature access codes |
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On 10/16/2016 02:33 AM, tux john wrote:
| Quote: | | The problem is that I do not know how to configure the feature access codes including transfer. |
Review features.conf
Doug |
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atux at null.net
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| Posted: Sun Oct 16, 2016 7:49 am Post subject: [asterisk-users] Feature access codes |
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I did edit the features.conf. what about extensions.conf?
On 16/10/2016, 14:45 Doug Lytle <support@drdos.info> wrote: |
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support at drdos.info
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